1. from datetime import datetime, timedelta
  3. def time_transformations(time_data, transformation_type, **kwargs):
  4. """
  5. Transforms a list of time values. For development/testing only.
  7. Args:
  8. time_data (list): A list of datetime objects or strings representing time.
  9. transformation_type (str): The type of transformation to apply.
  10. Valid options: "add_seconds", "subtract_minutes", "format_time"
  11. **kwargs: Keyword arguments specific to the transformation type.
  13. Returns:
  14. list: A list of transformed datetime objects or strings. Returns an empty list on error.
  15. """
  16. transformed_data = []
  18. if not time_data:
  19. return transformed_data # Return empty list if input is empty
  21. for time_value in time_data:
  22. try:
  23. if isinstance(time_value, str):
  24. dt = datetime.fromisoformat(time_value) #convert from string to datetime
  25. elif isinstance(time_value, datetime):
  26. dt = time_value
  27. else:
  28. print(f"Invalid time format: {time_value}. Skipping.")
  29. continue
  31. if transformation_type == "add_seconds":
  32. seconds = kwargs.get("seconds")
  33. if seconds is not None:
  34. dt += timedelta(seconds=seconds)
  35. else:
  36. print("Missing 'seconds' argument for add_seconds. Skipping.")
  37. continue
  38. elif transformation_type == "subtract_minutes":
  39. minutes = kwargs.get("minutes")
  40. if minutes is not None:
  41. dt -= timedelta(minutes=minutes)
  42. else:
  43. print("Missing 'minutes' argument for subtract_minutes. Skipping.")
  44. continue
  45. elif transformation_type == "format_time":
  46. format_string = kwargs.get("format")
  47. if format_string is not None:
  48. formatted_time = dt.strftime(format_string)
  49. transformed_data.append(formatted_time)
  50. else:
  51. print("Missing 'format' argument for format_time. Skipping.")
  52. continue
  53. else:
  54. print(f"Invalid transformation type: {transformation_type}. Skipping.")
  55. continue
  56. transformed_data.append(dt)
  57. except ValueError as e:
  58. print(f"Error processing time {time_value}: {e}. Skipping.")
  59. continue
  60. return transformed_data
  63. if __name__ == '__main__':
  64. # Example usage
  65. time_values = ["2023-10-26T10:00:00", datetime(2023, 10, 26, 12, 0, 0), "2023-10-27T14:30:00"]
  67. # Add 30 seconds to each time value
  68. transformed_time = time_transformations(time_values, "add_seconds", seconds=30)
  69. print(f"Added 30 seconds: {transformed_time}")
  71. # Subtract 15 minutes from each time value
  72. transformed_time = time_transformations(time_values, "subtract_minutes", minutes=15)
  73. print(f"Subtracted 15 minutes: {transformed_time}")
  75. # Format time as HH:MM:SS
  76. transformed_time = time_transformations(time_values, "format_time", format="%H:%M:%S")
  77. print(f"Formatted as HH:MM:SS: {transformed_time}")

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